Originally Posted by slo-fly
I think the 14x7 is your best bet for 3s on stock setup, ground clearance becomes a problem though. Do you have a 13x6.5 you can try?
I did try the 14 x 7, and clearance was an issue. I also tried the 13 x 6.5, and I was very happy with it. In fact, I got the formula just right this morning, when I used that prop with a 3300 3s battery. For the first time, the plane took off and landed beautifully. I was so happy to finally have this this plane flying as good as any in my hangar. That is when it happened...the plane started flying erratically. A flyby revealed that the rudder servo pulled all the way to the right, and locked up. (I read about the bad servos on this plane, but I figured that it was just a few unlucky people.) I brought it in for an awkward landing, and it came down on its nose. The only damage appears to be a bent prop shaft....ugh!!! Now, I have to sink more money into this beast!!